[M] Change in coreboot[main]: soc/intel/xeon_sp: Create CXL domains

[Patrick Rudolph (Code Review)]

Attention is currently required from: Arthur Heymans, Christian Walter, Johnny Lin, Lean Sheng Tan, Shuo Liu, Tim Chu.

Patrick Rudolph has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/81099?usp=email )

Change subject: soc/intel/xeon_sp: Create CXL domains
......................................................................

Patch Set 4:

(1 comment)

File src/soc/intel/xeon_sp/chip_common.c:

https://review.coreboot.org/c/coreboot/+/81099/comment/9ff98b0e_11bd8d6b :
PS4, Line 274: BusBase
From what I understand looking that the Intel reference code the PCI domain always covers all busses. Can you confirm that?
Isn't the CXL PCI device on bus BusBase just a regular PCI bridge?